Boiler stay-bolt.



@mamma PUBMED JUNE 16g 1908,

L. ummq. Boum STAY Bam. APYLNATQE FILED EULY 9. 1807.

Y Y @Wertung the following is a. specification.

entre. esserne serions" norms STAY-Bom. l

ne. seines, l

LEWIS BoRNEMA-n, on Denison., TEXAS.

speinqs'non rnettrsngtest.' Patented aimais, 190s.

Texas, have invented new end useful llmproveniente in Boiler Stovoltsp of which This invention relates .to improvements in liexible stoy-bolts or brnoes-`for boilers, and. particularly to thstclass of laterally yielding stey-bolts or bre-ces employed for oonnectmg :ind .bracing sheets of locomotive ond other steam boilers egalnst the internal stesrnpressure While permitting relative movement of the sheets end flexibiltyof the bolts or braces to compensate for unequal expansion ond contraction, vibration, etc., o' the ports, under which the bolts are subjected to ft shear strain. v

The object of the invention is to provide o stoy-bolt o thisl character which is simple of construction, e-ieient in use, comparatively inexpensive' oi' production adopted to be conveniently applied lwithout varying the usual construction of boiler sheets, and which will Vpermit the inner sheet to be removed for renewal o r repairs without disturbi'ng the outer sheet.

With these and other objects in view, thel invention consists of the teetures oconstruction, combination and arrangement of ports hereinafter fully described and claimed,

reference being had to the :recoinpiinying Figure ljis :t sectionel elevation showing the application o'l the stoy-bolt to the outer and inner sheets-of o boiler. Fig .2 is it similar view, showing e. 'slight inodilicntion. Fig. 3 is e, view shownnT the edoption el the invention ss it stoy-hlt orbroce for liuc* sheets. Fig. i is n View showing in section the bell end socket connection between the boltor or ce sections.

ln cnrrying niy invention into practice, ,l 'provide estoy-bolt or bruco comprising two members or sections 1 and 2, which nitty be of the seine length or veryv in length as de# sired. 'lhesection l is provided :it one end with e partially spherical hood 3 und et its' other endwith n threaded ortione. The section 2 is threaded :it hot 1 ends, its indicated, respectively, at' 5 and 6, and the threaded outer ends fl ond of the two sec vtions are edn ted to engage with corres 30nd.- ingly screwftninidml openings in the, oilerA 4sheets 7 und f5,v which muy constitute outer caption of the nut is eil'orded yand inner'sheets, representing in Figs. 1 and -2 the roof and crown sheets and in llig. 3 the iue sheets of the boiler. lt will be understood tlintziter the threaded outer ends oi'- the bolt sections ere screwed into the boiler sheets,l beyond which they project, the projecting ends, which :ire enguhirin torni or otherwise adopted for the application et of Wrench or other turning tool, are upset or riveted in the. usuel inonnerto festen the seme to the sheets und forni stemn tght' joints; but, nsshown in Fig. 2, the projecting end of the bolt sectioni? may be formed to re-v ceive an ordinary securing nut 9, which may be employed when s uliicient spoce for l'hereand e riveting connection isnot desired. In Fig. l the threaded ortion of the bolt section 2 is. enf lerged en may be o'A tapering formation for engagement with e tapered opening in the boilersheet, and these nud any other suitable forni or inode of connecting thc ends ofethe bolt sections with the boiler sheets may be employed.

The inner ends of 'the bolt sections 1 :1nd

2 are flexibly connected by :L coupling con1- rising n 'socket l0 having zi conti-nl chaine iler 1l and ai flaring woll 12 to receive nud eonforinto the contour ol" the hond Il, sziid olnunber being internally thrcuded :it one end,'ns indicated :it 1B, :indv vl'oruud with :t

l'lnring opening 13 at its opposite end to )ci-init the shunk o' the holt to have l'rcc interni uiovclucni to insure lhxihility' ol' the bolt in the rcluliw working of the ports under cx'musion und contraction und Yibrntion d iu'oiivc. sewn-cop or nul Il is externally thrcnded toscrcwi-nto the threaded portion i3 ol the soi-het and is 'provided with un ungulnr lluugeil i'oi' thev upplicziiion ot' :t

wrench or other tool in turning ii into :nid

out o'l the socket. lhe cop or uut is also formed with n thi-ended passage io to receive sofi'v uringl the running ol the locoy und engage the threaded ipoi-tion 5 -oi' the.

bolt sect ion except that the bolt sections ere sl'ightly -l vnried in shape. ond size to odeptthe seine-` for connection with the flue-sheets toserv whereby tie two bolt sec. tions may he ndjustnbiy und flexibly coupled roi so quired amount of flexibility can. not be obas 'a stay-connection betweenv saidA sheets. The socket may be in every case exterl nally of Aangular' form for the application of the wrench thereto to facilitate' the connec- 4described provides a stays bolt or brace which is not only simple of. construction, and may therefore, beproduced at a comu paratively low cost, but which will allow ample relative movement of the parts under vibration or expansion and contractionand' thus prevent injury to the bolts and the boiler-sheets. The construction and Inode of'connectingthe bolt sections also permits eective adjustment thereof to connect the boiler sheets as tightly as desired.

Heretofore it has been customary to ernploy a single-piece-bolt extending the full distance between the sheets connected thereby, reqtpiring the use in some cases of very long olts with material disadvantages. When either boiler-sheet of the two connected by the bolt becomes burned or otherwise injured, it is necessary when a single-piece-bolt is used to drill both ends of the bolt out of the sheets, thus enlarging the 'openings in the uninjured sheet with known objections. Furthermore, thev retainedI with. single-piece-bolts, even when tapered to allow Treater flexibility, and under the strain fai ing thereon, such bolts are liable to be fractured.

My invention obviates all these objections, and secures additional advantages in allow-I ing greater flexibility and saving time 'and labor in constructing and repairing the boiler. Either bolt section may be a plied from the inner or outer side of the Eoiler, and should an accident occur to the inner sheet of such u. nature' as to require its removal it is simply necessary, with my construction, to remove only the inner bolt sections 2 and applya corresponding new seca tion to the new sheet for connection with the bolt sections'l, which may remain in'place during the course of. repairs. The outer bolt sections 1- may be removed in like manner Aindependently o'the inner bolt sections when the outer sheet is injured, with a consequent saving ol time and labor in making the necessary repairs andwithout the` necessity -of removingand discarding the entire bolt. Furthermore, the construction described adapts the bolt to be applied to boiler-sheets as ordinarily constructed and without the necessity of enlarging the openings in said sheets or modifying them 'in any other manner.

Having thus described the invention, p

what I claim, is

As a new and improved article of manufacture, a boiler stay-bolt or brace comprising two bolt-like sections having proximate coupling ends, the coupling end of one sec tion being formed with an integral Haring head and the coupling end of the other section Yprovided with screw-threads, a coupling socket receiving said head, said socket being internally screw-threaded at one end and provided at its opposite end with a flaring wall in bearing contact with the Haring surface of the head and having a flaring entrance leading throughl said wall for the said headed section, said section being adapted to have freemovement in said Haring entrance, whereby the sections are ada' ted to have relative universal play,'and a iollow internally and externally threaded nut receiving the threaded end of the other section and enga ing the threadedv ortion of` the socket, su stantially as descri ed.

In testimony whereof, l ailix my signature in presence or two witnesses.

y A LEWIS BORNEMAN.'

Witnesses;

Grao. RFRENCH, W. ll. HUGHES. 

